[AR] 4l80e crossmember
Thread Starter
Supreme Member

Joined: May 2005
Posts: 1,058
Likes: 4
From: Malvern, Arkansas
Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
4l80e crossmember
I just found a site that sells 4l80e crossmembers for our cars. Paracing.com I ordered one and shipping and all was $225.00. I've looked for years and never seen one until now so wanted to spread the word.
Joined: Feb 2000
Posts: 1,855
Likes: 13
From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
Re: 4l80e crossmember
I have one, check your fitment, you may have to grind on it in spots to get it to fit correctly, but it works.
Thread Starter
Supreme Member

Joined: May 2005
Posts: 1,058
Likes: 4
From: Malvern, Arkansas
Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
Re: 4l80e crossmember
did you get it from them. let me know everything about your 4l80e install since im about to try it. what year trans is best and what controller did you use. spare no detail.
Joined: Feb 2000
Posts: 1,855
Likes: 13
From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
Re: 4l80e crossmember
I have a 4L80e crossmember with torque arm mount for the ls1 swap with 4l80e that i ground on trying to get it to fit. Gave up on it and bought the pa racing crossmember instead.
You can buy it from me for $150, it cost me $400
You can buy it from me for $150, it cost me $400
Supreme Member


Joined: Apr 2010
Posts: 1,200
Likes: 126
From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: 4l80e crossmember
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Joined: Feb 2000
Posts: 1,855
Likes: 13
From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
Re: 4l80e crossmember
You have to fabricate your own or buy a tunnel mounted torque arm like the bmr extreme torque arm and weld it to the trans tunnel frame area. this is the one i am running: http://m.bmrsuspension.com/?page=products&productid=402
It is cheaper to fabricate your own mount. I installed the PA racing crossmember then zip tied my stock torque arm with the bushing in between the crossmember and the stock torque arm to drive the car to the shop where they installed and welded the tunnel mounted torque arm for me. You could zip tie your stocker to the pa racing crossmember and drive it to a shop so someone could weld a mount on the back of the pa racing crossmember. My welder was crappy and i was tired of messing with it after i had some many issues with my transmission that i paid a local speed shop to do it for me.
It is cheaper to fabricate your own mount. I installed the PA racing crossmember then zip tied my stock torque arm with the bushing in between the crossmember and the stock torque arm to drive the car to the shop where they installed and welded the tunnel mounted torque arm for me. You could zip tie your stocker to the pa racing crossmember and drive it to a shop so someone could weld a mount on the back of the pa racing crossmember. My welder was crappy and i was tired of messing with it after i had some many issues with my transmission that i paid a local speed shop to do it for me.
Last edited by 89gta383; Feb 12, 2020 at 08:26 AM.
Supreme Member


Joined: Apr 2010
Posts: 1,200
Likes: 126
From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: 4l80e crossmember
You have to fabricate your own or buy a tunnel mounted torque arm like the bmr extreme torque arm and weld it to the trans tunnel frame area. this is the one i am running: http://m.bmrsuspension.com/?page=products&productid=402
It is cheaper to fabricate your own mount. I installed the PA racing crossmember then zip tied my stock torque arm with the bushing in between the crossmember and the stock torque arm to drive the car to the shop where they installed and welded the tunnel mounted torque arm for me. You could zip tie your stocker to the pa racing crossmember and drive it to a shop so someone could weld a mount on the back of the pa racing crossmember. My welder was crappy and i was tired of messing with it after i had some many issues with my transmission that i paid a local speed shop to do it for me.
It is cheaper to fabricate your own mount. I installed the PA racing crossmember then zip tied my stock torque arm with the bushing in between the crossmember and the stock torque arm to drive the car to the shop where they installed and welded the tunnel mounted torque arm for me. You could zip tie your stocker to the pa racing crossmember and drive it to a shop so someone could weld a mount on the back of the pa racing crossmember. My welder was crappy and i was tired of messing with it after i had some many issues with my transmission that i paid a local speed shop to do it for me.
Joined: Feb 2000
Posts: 1,855
Likes: 13
From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
Re: 4l80e crossmember
I tried that hooker crossmember and couldn't get it to line up. i had to grind on it alot and gave up on it.
Supreme Member


Joined: Apr 2010
Posts: 1,200
Likes: 126
From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: 4l80e crossmember
Yea if you don't all their stuff it won't line up worth a ****. I've got a 370 LS in mine with 4 position adapter plates and an adjustable transmission mount so getting it to line up was no problem.
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